Session Manager

https://aws.amazon.com/premiumsupport/knowledge-center/systems-manager-ec2-instance-not-appear/

https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-install-ssm-agent.html

https://aws.amazon.com/premiumsupport/knowledge-center/install-ssm-agent-ec2-linux/

sudo start amazon-ssm-agent

got this message

start: Unknown job: amazon-ssm-agent

sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm

https://github.com/openresty/openresty/issues/444

sudo yum install openresty

sudo yum install openresty –skip-broken

sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm

go back to session manager